In ancient times, when I entered primary school at the age of eight, I learned to "sweep to cope with advance and retreat, and shoot books with ceremony and music."

Sweep to cope with advance and retreat: sweep: sprinkle water to sweep the floor, generally referring to housework; Advance and retreat: welcome guests and other etiquette. Always refers to the minimum things that young people should do in front of their elders and guests at home.

"Rites and music shoot the number of imperial books" is the so-called "six arts" in ancient times, that is, the six basic talents that China ancient Confucianism required students to master. Ceremony: etiquette; Music: music; Shooting: archery technique; Royal: the technology of driving a carriage; Book: calligraphy; Number: algorithm.